Device for removing deformities in collapsible metal tubes



July 22, 1924. 15%2299 A. L. EDWARDS DEVICE FOR REMOVING DEFORMITIES INCOLLAPSIBLE METAL TUBES Filed Aug. 4, 1922 ALONZO L. EDWARDS, FWHEELING, WEST VIRGINIA, ASSIGNOR To WHEEIJNG STAMPING COMPANY, OFWHEELHVG, WEST VIRGINIA, A CORPORATION OF WEST vmsmm.

DEVICE FOR Iii-MOVING DEFORMITIES IN COLLAPSIBLE METAL TUBES.

Application filed August 4, 1922. Serial No. 579,605.

To all whom it may concern:

Be it known that I,-Ar.oNzo L. EDWARDS, a citizen of the United Statesof America, and resident of Wheeling, county of Ohio,

and State of lVest Virginia, have invented certain new and usefulImprovements in Devices for Removing Deformities 1n Collapsible MetalTubes, of which the following is a specification.

This invention relates broadly to enamel coating mechanism forcollapsible metal tubes, and more specifically to apparatus forpreparing such tubes for receiving such coating.

. The primary object of the invention is to provide, in association withcollapsible-tube enameling mechanism, a device whereby dents, wrinklesand like deformities in the tubes are removed as the latter approach thecoating roll or rolls.

Due to the extreme thinness and the resultant fragility of the walls ofordinary collapsible metal tubes pressed from tin,

lead, or alloys of said metals, it is practically impossible to sohandle such tubes as to prevent the formation therein of slightindentions or deformities. Without the removal of such deformities, theapplication of an even or uniform enamel coating to the tubes cannot beeffected by means of the coating roll employed in'ordinary commercialforms of enameling mechanisms. It is therefore the aim of the presentinvention to provide a simple and effective device whereby the bodies ofthe tubes may be restored to their true cylindrical form immediatelyprior to their engagement with the coating roll.

In describing the invention in detail, refenence is herein hadto. theaccompanying drawings, in which Figure l is a top plan view of theinvention, illustrating its application to the enameling mechanism, aportion of said mechanism being shown;

Fig. 2 is an end elevation of the apparatus shown in Fig. 1; and

Figs. 3 and 4 are partial sections taken, respectively, on lines 33 and4-4, Fig. 1.

Referring to said drawings, 1 indicates the usual rotatingcarrier-diskof an enameling machine, said disk having fixed in spacedrelation on its outer face adjacent to its peripheral edge a pluralityof horizontally disposed spindles 2 designed to have more or lessclosely fitted thereon the collapsible metal tubes 3 which are to becoated through direct contact with a suitably positioned rotatingenamel-applying, or coating, roll 4, as ordinarily.

The disk 1 is carried upon an end of a shaft 5 which is journaled uponupright supports 6 mounted upon a base 7. Fixed upon said base is abar-like member 8 having integral bearing portions 8 which coact withsimilar portions 9 formed on the rear edge of a bar 9 in the formationof a hinge joint, said bearing portions 8 and 9 receiving a horizontalrod or pintle 10. The front edge of said bar 9 carries bearing portions9* having journaled therein a shaft 11 which is driven from any suitablerotating part of the enameling mechanism, as by means of a sprocketchain 12 operating upon a sprocket wheel 13 carried by the outer end ofsaid shaft 11.

Carried by the inner end of the shaft 11 is a roller 14-, preferably ofwood or a suitable composition material, adapted to be frictionallyengaged by the cylindrical bodies of the spindle-carried tubes 3 as thelatter are advanced toward the coating roll 4. A retractile coil spring15 having its lower end attached to one of the bearings 9" is supportedat its upperend by a stationary part of the structure, as by a lug 16carried by one of the supports 6. The tension of said spring 15 is suchthat the hinged bar 9' is normally held in an upwardly swung position,as shown in Figs. 3 and 4, in which the roller 14 is supported with theupper-- portion of its periphery in position to be frictionally engagedby the bodies of tubes 3 borne by the spindles 2. An arm 17 mounted onthe bar 8 is disposed in overhanging'relation to the bar 9 and carries aset screw 18 which is adapted for vertical adjustment with respect tosaid bar 9,thereby to limit the extent to which said roller 14 may beelevated by said spring, it being designed that said roller shall occupysuch position that, during the interval of its engagement with saidroller, each tube will be frictionally rotated throughout at least onecomplete revolution and that suflicient presdentions or irregularities:in the body of said tube. Otherwise expressed, the traverse of the tubeupon the periphery of the roller is throughout a distance at least equalto the circumference of the tube, and the pressure exerted through thetube body on depressing said roller against the tension of itssupporting spring to allow said tube to pass the roller is suflicient toroll out any irregularities in said body.

It will be noted that the coating roll 4 occupies a position somewhatbelow the horizontal plane of the axis of the disk 1, and that theroller 14 is located adjacent to and below said coating roll. Thus, thedeformities of the tube are rolled out immediately prior to engagementof the same with bearings having hinged connection with said base, ashaft journaled in said bearings, .a

in a position in which a portion of the periphery of said roller ispresented in the path of travel of tubes borne by said spindles. 2. In acollapsible-tube coating mechanism the combination with 'a base,supports carried by said base, a shaft journaled on said supports, and acarrier-disk carried by an end of said shaft, said disk havingtubecarrying spindles on a face thereof, of shaftbearings having hingedconnection with said base, a shaft journaled in said bearings, a rollercarried by said shaft, and a re tractile coil spring normally supportingsaid bearings in an elevated position whereby said roller is positionedwith a portion of its periphery in the path of travel of the tubescarried by said spindles.

In testimony whereof, I afiix my signature in presence of twosubscribing witnesses.

ALONZO L. EDWARDS. Witnesses:

Mrs. J. G. PRINCE, VICTOR VPYNSKY}.

